May weather forecast
Saint Marys, GA

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Weather in May

May embraces full-blown spring in Saint Marys, Georgia. Even though there's a slight decline in wind speed from April, the breezes maintain a comforting freshness. Rainfall levels rise, nurturing the verdant surroundings. The UV index peaks, calling for some sun protection. Temperatures in May typically fluctuate between 68.7°F (20.4°C) and 83.7°F (28.7°C).

Temperature

May introduces a marginal temperature uplift, with average high-temperatures adjusting from April's 77.5°F (25.3°C) to a still moderately hot 83.7°F (28.7°C). During May, the average low-temperature is an agreeable 68.7°F (20.4°C).

Heat index

The average heat index in May is estimated at a tropical 89.6°F (32°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

In Saint Marys, the average relative humidity in May is 72%.

Rainfall

In Saint Marys, during May, the rain falls for 13 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, in Saint Marys, there are 165.4 rainfall days, and 23.15" (588mm) of precipitation is accumulated.

Snowfall

In Saint Marys, snow does not fall in January, March through December.

Daylight

The average length of the day in May in Saint Marys is 13h and 43min.
On the first day of May in Saint Marys, sunrise is at 6:41 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:24 pm EDT.

Sunshine

In May, the average sunshine in Saint Marys, Georgia, is 10.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 7 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is it in Saint Marys in May?

The average high-temperature, in May, in Saint Marys, is 83.7°F (28.7°C), while the average low-temperature is 68.7°F (20.4°C). In May, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 89.6°F (32°C).

What is the average humidity in May in Saint Marys?

In May, the average relative humidity in Saint Marys, Georgia, is 72%.

How much does it rain in Saint Marys in May?

In May, in Saint Marys, Georgia, the rain falls for 13 days. Throughout May, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in Saint Marys?

January, March through December are months without snowfall.

What is the average length of the day in May in Saint Marys?

In May, the average day length in Saint Marys, Georgia, is 13h and 43min.

When is the sunrise / sunset in May in Saint Marys?

On the first day of May, sunrise is at 6:41 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 8:24 pm EDT.

How many hours of sunshine does Saint Marys have in May?

In Saint Marys, Georgia, the average sunshine duration in May is 10.6h.

What is the month with the highest UV index in Saint Marys?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

How high is the UV index in May in Saint Marys?

In May, the average daily maximum UV index in Saint Marys, Georgia, is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Saint Marys, GA

Average temperature in May - Saint Marys, GA
  • Average high temperature in May: 83.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (61.5°F).

  • Average low temperature in May: 68.7°F

The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).

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Average pressure in May
Saint Marys, GA

Average pressure in May - Saint Marys, GA
  • Average pressure in May: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

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Average wind speed in May
Saint Marys, GA

Average wind speed in May - Saint Marys, GA
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in May
Saint Marys, GA

Average humidity in May - Saint Marys, GA
  • Average humidity in May: 72%

The months with the highest relative humidity are August and December (77%).
The month with the lowest relative humidity is March (71%).

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Average rainfall in May
Saint Marys, GA

Average rainfall in May - Saint Marys, GA
  • Average rainfall in May: 1.89"

The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in May
Saint Marys, GA

Average rainfall days in May - Saint Marys, GA
  • Average rainfall days in May: 13 days

The month with the highest number of rainy days is August (23.9 days).
The month with the least rainy days is February (8.3 days).

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Average snowfall days in May
Saint Marys, GA

Average snowfall days in May - Saint Marys, GA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in May /
Average sunshine in May
Saint Marys, GA

Average daylight in May / Average sunshine in May - Saint Marys, GA
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in May
Saint Marys, GA

Average sunshine days in May - Saint Marys, GA
  • Average sunshine days in May: 15.4 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is August (4.5 days).

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Average UV index in May
Saint Marys, GA

Average UV index in May - Saint Marys, GA
  • Average UV index in May: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in May
Saint Marys, GA

Average cloud cover in May - Saint Marys, GA
  • Average cloud cover in May: 27

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 27).

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Average visibility in May
Saint Marys, GA

Average visibility in May - Saint Marys, GA
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Saint Marys, Georgia, USA

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